Disabling autoscale is not wirking

[P@u1]

Hi Everyone,

in my program I want to be able to disable the autoscale for the y-axis and reenable it later.
I use a checkbox for this:

//std::vector<QwtPlot*> plots_;
void MainWindow::on_freezeScaleBox_toggled(bool on)
{
	for(int i = 0; i < plots_.size(); ++i)
	{
		plots_[i]->setAxisAutoScale(QwtPlot::yLeft, on);
	}
}

//std::vector<QwtPlot*> plots_;
void MainWindow::on_freezeScaleBox_toggled(bool on)
{
	for(int i = 0; i < plots_.size(); ++i)
	{
		plots_[i]->setAxisAutoScale(QwtPlot::yLeft, on);
	}
}

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When I first disable the autoaxisscale and then add some curves and some data, it is autoscaled anyway...
Any suggestions?

[Uwe]

It doesn't matter when you attach your plot items - the only situation, where the flag is processed is QwtPlot::replot. If you want to exclude plot items individually from autoscaling do

item->setItemAttribute( QWtPlot::Item::AutoScale, false );

item->setItemAttribute( QWtPlot::Item::AutoScale, false );

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Uwe

[P@u1]

Thx for your help.
The problem was somewhat simpler

I just had to replace
"on" with "!on"

Because otherwise the semantics were wrong.